Research In Motion Ltd on Wednesday unveiled a long-delayed line of smartphones it hopes will return the company to the top of a market it once dominated, promising its BlackBerry 10 devices will wow consumers and businesses alike when they hit store shelves.

Here is some early reaction to the launch:

MICHAEL GARTENBERG, ANALYST, GARTNER

"RIM has clearly reinvented itself with a new set of devices and a platform. It's definitely met the table stakes for many users. The challenge will be to keep the momentum going for developers and apps and leveraging the Blackberry brand. Blackberry delivered the first step but this is a marathon not a sprint."

(Compiled By Frank McGurty)